B10C4-11

B10C4-11-HEATED STEERING WHEEL CONTROL - CIRCUIT SHORT TO GROUND

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the engine running.

- Set Condition:
The Heated Seat Module (HSM) detects on the Heated Steering Wheel Feed circuit a voltage below its threshold for more than two seconds when the output is turned on.





Diagnostic Test

1. CHECK IF THE DTC IS ACTIVE

NOTE: Make sure the battery is fully charged and the charging system is operating properly before proceeding.

1. Turn the ignition on.
2. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the ignition off.
4. Start the engine and let it run.
5. Turn the Heated Steering Wheel (HSW) on.
6. With the scan tool, read DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Go To 6

2. CHECK THE (C91) HEATED STEERING WHEEL FEED CIRCUIT

WARNING:
Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

1. Disconnect the Steering Column Control Module (SCCM) C1 harness connector.

NOTE: Check connectors. Clean and repair as necessary.

WARNING:
Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

2. With the scan tool, erase DTCs.
3. Start the engine and let it run.
4. Turn the HSW on.
5. With the scan tool, read DTCs.

Is this DTC active?

Yes

- Go To 3

No

- Go To 5

3. CHECK THE (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Heated Seat Module (HSM) C4 harness connector.
3. Measure the resistance between ground and the (C91) Heated Steering Wheel Feed circuit.

Is the resistance below 10k Ohms?

Yes

- Repair the (C91) Heated Steering Wheel Feed circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Go To 4

4. CHECK THE (C91) HEATED STEERING WHEEL FEED CIRCUIT FOR A SHORT TO THE (C986) HEATED STEERING WHEEL RETURN CIRCUIT
1. Measure the resistance between the (C91) Heated Steering Wheel Feed circuit and the (C986) Heated Steering Wheel Return circuit at the SCCM C1 harness connector.

Is the resistance below 10k Ohms?

Yes

- Repair the (C91) Heated Steering Wheel Feed circuit for a short to the (C986) Heated Steering Wheel Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Replace the Heated Seat Module (HSM). Heated Seat Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

5. CHECK THE HEATED STEERING WHEEL

WARNING:
Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

1. Remove the Driver Airbag. Driver Air Bag - Removal.
2. Disconnect the SCCM C2 harness connector.

NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Heated Steering Wheel (HSW) and the Steering Column Control Module (SCCM). Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

3. Reconnect the SCCM C1 harness connector.

WARNING:
Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

4. With the scan tool, erase DTCs.
5. Turn the ignition off.
6. Start the engine and let it run.
7. Turn the HSW on.
8. With the scan tool, read DTCs.

Is the same DTC active?

Yes

- Replace the Steering Column Control Module (SCCM). Steering Column Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Replace the Heated Steering Wheel (HSW). Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

6. CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Attempt to reproduce the condition by rotating the steering wheel or by adjusting the seat.
5. With the scan tool, check for any Environmental Data to help identify the conditions in which the DTC was set.
6. Check Service Bulletins for any possible causes that may apply.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Test complete.